The main factors affecting the permeability of concrete are
(i)Grade of concrete
(ii)Minimum cement content
(iii)Maximum water cement ratio
[ A ] i
[ B ] i and ii
[ C ] ii and iii
[ D ] i, ii and iii
(i)Grade of concrete
(ii)Minimum cement content
(iii)Maximum water cement ratio
[ A ] i
[ B ] i and ii
[ C ] ii and iii
[ D ] i, ii and iii